Self-closing clasp or cock for rubber tubes.



PATENTED AUG. 13,- 1907 G. IVANOFF.

SELF CLOSING CLASP 0R COOK FOB. RUBBER TUBES.

APPLICATION FILED JULY 81.1906.

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UNITED STATES PATENT OFFICE.

GABRIEL IVANOFF, OF MOSCOW, RUSSIA.

Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed July 31,1906. Serial No. 828,540.

To all whom it inay concern:

Be it known that I, GABRIEL IVANOFF, a subject of the Emperor of Russia,residing at Moscow, Russia, have invented a new and useful Improvementin Self- Olosing Clasps or Cocks for Rubber Tubes; and I do herebydeclare the following to be a full, clear, and exact description of thesame, reference being had to the drawing accompanying and forming partof the specification.

In the annexed drawing, Figure 1 represents a longitudinal section ofthe clasp through line A A on Fig. 2; Fig. 2 is a similar sectionthrough line B B; Fig. 3 is a cross-section through line C C and Fig. 4is an end view of the device.

The clasp consists of two parts a and b (Fig. 1), made of hard rubber.These two parts, on being assembled within a rubber tube, form closingmeans having a circular crosssection. A hingle, Z, (Fig. 1) is locatednearly midway of these parts, and allows them to be opened and closed.The forward ends or jaws e and 6 (Figs. 1 and 2) press firmly to eachother, while the rearward ends d and d (Figs. 1 and 2) are made in theform of thin, long levers, which stand apart from each 'other when theparts a and Z) are in normal state. A

passage 0, which does not, however, penetrate through, is drilled in thecenter of the clasp, allowing liquid to pass when the jaws e and e aremoved apart.

The clasp, in assembled state, is inserted firmly into the end of therubber tube It, as shown in Fig.1 of the drawing. In view of the factthat the ends a and c (jaws), of the clasp, are somewhat thicker or ofgreater cross-section than the remaining part of same, they are pressedmore firmly by the rubber tube It and, closing firmly upon each other,they do not allow the liquid to flow out of the tube. It the tube 70 ispressed at the location of lovers d and d (Fig. 1) the jaws e and a willbe forced apart, or opened, and the liquid will flow freely out of thetube. When the pressure on levers (Z and d ceases, however, theelasticity of the tube will again force the lips c and 6 together, andstop the passage of liquid.

Claim.

The combination within a rubber tube of a self-closing cock or claspfitted within said tube and elastically held in position thereby, saidcock or clasp comprising a pair of levers normally closing the passagethrough the tube and so hinged to one another that a passage will beopened through the tube upon pressure being exerted upon the levers.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses.

GABRIEL IVANOFF.

Witnesses:

LIIONID SEREBRIAKOFF, IVAN SvENsKY.

